function menu_init ()
{
	var menu = document.getElementById('nav');
	var subs = menu.childNodes;
	
	var j = 0;
	
	for (var i=0 ; subs[i]; i++)
	{
		if (subs[i].tagName=='LI')
		{
			hs = subs[i].getElementsByTagName('B');
			heading = hs[0];
			ss = subs[i].getElementsByTagName('UL');
			submenu = ss[0];
			
			j++;
			
			heading.onclick = function () { menu_toggle(this); };

			if (getCookie('menu'+j)=='1')
				 submenu.style.display = 'block';
			else if (getCookie('menu'+j)=='0')
				submenu.style.display = 'none';
			else if (j==1)
				submenu.style.display = 'block';
			else
				submenu.style.display = 'none';
		}
	}
}

function menu_toggle (heading)
{
	var section = heading.parentNode;
	var submenus = section.getElementsByTagName('UL');
	var submenu = submenus[0];
		
	if (submenu.style.display=='none')
		submenu.style.display = 'block';
	else
		submenu.style.display = 'none';
		
	var j = 0;

	var menu = document.getElementById('nav');
	var subs = menu.childNodes;
	for (var i=0 ; subs[i]; i++)
	{
		if (subs[i].tagName=='LI')
		{
			hs = subs[i].getElementsByTagName('B');
			h = hs[0];			
			j++;
			
			if (h==heading && submenu.style.display=='none')
				setCookie('menu'+j, '0', '/');
			else if (h==heading)
				setCookie('menu'+j, '1', '/');
		}
	}
		

}

addLoadEvent(menu_init);